Agilent Technologies 6632B User manual

USER’S GUIDE

Dynamic Measurement DC Source

Agilent Model 66332A

System DC Power Supply

Agilent Model 6631B, 6632B, 6633B, 6634B

Agilent Part No. 5962-8196

Microfiche Part No. 5962-8197

Printed in Malaysia: March 2004

2

Warranty Information

CERTIFICATION

Agilent Technologies certifies that this product met its published specifications at time of shipment from the factory.

Agilent Technologies further certifies that its calibration measurements are traceable to the United States National

Bureau of Standards, to the extent allowed by the Bureau’s calibration facility, and to the calibration facilities of other

International Standards Organization members.

WARRANTY

This Agilent Technologies hardware product is warranted against defects in material and workmanship for a period

with a hardware product and when properly installed on that hardware product, are warranted not to fail to execute

their programming instructions due to defects in material and workmanship for a period of 90 days from date of

delivery. During the warranty period Agilent Technologies will, at its option, either repair or replace products which

prove to be defective. Agilent does not warrant that the operation for the software firmware, or hardware shall be

uninterrupted or error free.

For warranty service, with the exception of warranty options, this product must be returned to a service facility

designated by Agilent. Customer shall prepay shipping charges by (and shall pay all duty and taxes) for products

returned to Agilent for warranty service. Except for products returned to Customer from another country, Agilent shall

pay for return of products to Customer.

Warranty services outside the country of initial purchase are included in Agilent’s product price, only if Customer

pays Agilent international prices (defined as destination local currency price, or U.S. or Geneva Export price).

If Agilent is unable, within a reasonable time to repair or replace any product to condition as warranted, the

Customer shall be entitled to a refund of the purchase price upon return of the product to Agilent.

LIMITATION OF WARRANTY

The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by the

Customer, Customer-supplied software or interfacing, unauthorized modification or misuse, operation outside of the

environmental specifications for the product, or improper site preparation and maintenance. NO OTHER

WARRANTY IS EXPRESSED OR IMPLIED. AGILENT SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES

OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

EXCLUSIVE REMEDIES

THE REMEDIES PROVIDED HEREIN ARE THE CUSTOMER’S SOLE AND EXCLUSIVE REMEDIES. AGILENT

SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL

DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

ASSISTANCE

The above statements apply only to the standard product warranty. Warranty options, extended support contacts,

product maintenance agreements and customer assistance agreements are also available. Contact your nearest

Agilent Technologies Sales and Service office for further information on Agilent’s full line of Support Programs.

of one year from date of delivery. Agilent software and firmware products, which are designated by Agilent for use

3

Safety Summary

The following general safety precautions must be observed during all phases of operation of this instrument.

Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety

standards of design, manufacture, and intended use of the instrument. Agilent Technologies assumes no liability

f

or the customer's

f

ailure to com

p

l

y

with these re

q

uirements.

GENERAL

This product is a Safety Class 1 instrument (provided with a protective earth terminal). The protective features of

this product may be impaired if it is used in a manner not specified in the operation instructions.

This ISM device complies with Canadian ICES-001. Cet appareil ISM est conforme à la norme NMB-001 du Canada.

ENVIRONMENTAL CONDITIONS

This instrument is intended for indoor use in an installation category II, pollution degree 2 environment. It is

designed to operate at a maximum relative humidity of 95% and at altitudes of up to 2000 meters. Refer to the

specifications tables for the ac mains voltage requirements and ambient operating temperature range.

BEFORE APPLYING POWER

Verify that the product is set to match the available line voltage, the correct fuse is installed, and all safety

precautions are taken. Note the instrument's external markings described under "Safety Symbols".

GROUND THE INSTRUMENT

To minimize shock hazard, the instrument chassis and cover must be connected to an electrical ground. The

instrument must be connected to the ac power mains through a grounded power cable, with the ground wire firmly

connected to an electrical ground (safety ground) at the power outlet. Any interruption of the protective

(grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that

could result in personal injury.

ATTENTION: Un circuit de terre continu est essentiel en vue du fonctionnement sécuritaire de l'appareil.

Ne jamais mettre l'appareil en marche lorsque le conducteur de mise … la terre est d‚branch‚.

FUSES

For continued protection against fire hazard, replace fuse with same type and rating. Only fuses with the required

rated current, voltage, and specified type (normal blow, time delay, etc.) should be used. Do not use repaired fuses

or short-circuited fuseholders. To do so could cause a shock or fire hazard.

Pour une protection continue contre les risques d'incendie, remplacez le fusible avec fusible de même type.

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE

Do not operate the instrument in the presence of flammable gases or fumes.

DO NOT REMOVE THE INSTRUMENT COVER

Warning. Shock Hazard. Hazardous voltage on heat sink. No operator serviceable parts inside. Component

replacement and internal adjustments must be made only by qualified service personnel. Consult service manual -

Metric and English hardware used.

Avertissement. Risque de choc. Tension électrique dangereuse sur dissipateur thermique. Aucune pièce

réparable à l'intérieur. Confiez l'entretien à un personnel qualifié. Consultez le manuel de service - matériel

métrique et impérial utilisé.

Instruments that appear damaged or defective should be made inoperative and secured against unintended

o

p

eration until the

y

can be re

p

aired b

y

q

uali

f

ied service

p

ersonnel.

4

SAFETY SYMBOLS

Direct current

Alternating current

Both direct and alternating current

Three-phase alternating current

Earth (ground) terminal

Protective earth (ground) terminal

Frame or chassis terminal

Terminal is at earth potential. Used for measurement and control circuits designed to be operated

with one terminal at earth potential.

Terminal for Neutral conductor on permanently installed equipment

Terminal for Line conductor on permanently installed equipment

On (supply)

Off (supply)

Standby (supply). Units with this symbol are not completely disconnected from ac mains when

this switch is off. To completely disconnect the unit from ac mains, either disconnect the power

cord or have a qualified electrician install an external switch.

In position of a bi-stable push control

Out position of a bi-stable push control

Caution, risk of electric shock

Caution, hot surface

Caution (refer to accompanying documents)

WARNING The WARNING si

g

n denotes a hazard. It calls attention to a

p

rocedure,

p

ractice, or the like,

which, if not correctl

y

p

erformed or adhered to, could result in

p

ersonal in

j

ur

y

. Do not

p

roceed

be

y

ond a WARNING si

g

n until the indicated conditions are full

y

understood and met.

Caution The CAUTION si

g

n denotes a hazard. It calls attention to an o

p

eratin

g

p

rocedure, or the like,

which, if not correctl

y

p

erformed or adhered to, could result in dama

g

e to or destruction of

p

art

or all of the

p

roduct. Do not

p

roceed be

y

ond a CAUTION si

g

n until the indicated conditions are

full

y

understood and met.

5

DECLARATION OF CONFORMITY

According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014

Manufacturer’s Name and Address

Responsible Party Alternate Manufacturing Site

Agilent Technologies, Inc. Agilent Technologies (Malaysia) Sdn. Bhd

550 Clark Drive, Suite 101

Budd Lake, New Jersey 07828

USA

Malaysia Manufacturing

Bayan Lepas Free Industrial Zone, PH III

11900 Penang,

Malaysia

Declares under sole responsibility that the product as originally delivered

Product Names a) Mobile Communications DC Source

b) System DC Power Supply

Model Numbers a) 66332A, 66312A, 66311B, 66311D

66309B, 66309D, 66319B, 66319D, 66321B, 66321D

b) 6631B, 6632B, 6633B, 6634B 6611C

6612C, 6613C, 6614C

Product Options This declaration covers all options and customized products based on

the above products.

Complies with the essential requirements of the Low Voltage Directive 73/23/EEC and the EMC

Directive 89/336/EEC (including 93/68/EEC) and carries the CE Marking accordingly.

EMC Information ISM Group 1 Class A Emissions

As detailed in Electromagnetic Compatibility (EMC), Certificate of Conformance Number

CC/TCF/00/030 based on Technical Construction File (TCF) HPNJ8, dated

Apr. 25, 2000

Assessed by: Celestica Ltd, Appointed Competent Body

Westfields House, West Avenue

Kidsgrove, Stoke-on-Trent

Straffordshire, ST7 1TL

United Kingdom

Safety Information and Conforms to the following safety standards.

IEC 61010-1:2001 / EN 61010-1:2001

Canada: CSA C22.2 No. 1010.1:1992

UL 61010B-1: 2003

This DoC applies to above-listed products placed on the EU market after:

January 1, 2004

Date Bill Darcy/ Regulations Manager

For further information, please contact your local Agilent Technologies sales office, agent or distributor, or

Agilent Technologies Deutschland GmbH, Herrenberger Stra

β

e 130, D71034 Böblingen, Germany

Revision: B.00.00 Issue Date: Created on 11/24/2003 3:14

PM Document No. Eagle.11.24.doc

To obtain the latest Declaration of Conformity, go to http://regulations.corporate.agilent.com and click on “Declarations of

Conformity.”

6

Acoustic Noise Information

Herstellerbescheinigung

Diese Information steht im Zusammenhang mit den Anforderungen der

Maschinenläminformationsverordnung vom 18 Januar 1991.

* Schalldruckpegel Lp <70 dB(A)

* Am Arbeitsplatz

* Normaler Betrieb

* Nach EN 27779 (Typprüfung).

Manufacturer’s Declaration

This statement is provided to comply with the requirements of the German Sound Emission Directive,

from 18 January 1991.

* Sound Pressure Lp <70 dB(A)

* At Operator Position

* Normal Operation

* According to EN 27779 (Type Test).

Printing History

The edition and current revision of this manual are indicated below. Reprints of this manual containing

minor corrections and updates may have the same printing date. Revised editions are identified by a new

printing date. A revised edition incorporates all new or corrected material since the previous printing

date.

Changes to the manual occurring between revisions are covered by change sheets shipped with the

manual. In some cases, the manual change applies only to specific instruments. Instructions provided on

the change sheet will indicate if a particular change applies only to certain instruments.

This document contains proprietary information protected by copyright. All rights are reserved. No part

of this document may be photocopied, reproduced, or translated into another language without the prior

consent of Agilent Technologies. The information contained in this document is subject to change

without notice.

Update 1 __________July, 1999

Update 2 __________January, 2000

Update 3 __________August, 2000

Update 4 __________March, 2004

7

Table of Contents

Warranty Information 2

Safety Summary 3

Acoustic Noise Information 6

Printing History 6

Table of Contents 7

QUICK REFERENCE 9

Agilent 66332A Dynamic Measurement DC Source and

Agilent 6611C-6614C System DC Power Supply 9

The Front Panel - At a Glance 10

Front Panel Number Entry 11

Front Panel Annunciators 12

Immediate Action Keys 12

Front Panel Menus - At a Glance 13

SCPI Programming Commands - At a Glance 14

The Rear Panel - At a Glance 15

GENERAL INFORMATION 17

Document Orientation 17

Safety Considerations 18

Options and Accessories 18

Description 19

Capabilities 19

Front Panel Controls 19

Remote Programming 19

Output Characteristic 20

INSTALLATION 21

Inspection 21

Damage 21

Packaging Material 21

Items Supplied 21

Cleaning 21

Location 22

Bench Operation 22

Rack Mounting 22

Input Connections 23

Connect the Power Cord 23

Output Connections 23

Wire Considerations 23

Current Ratings 23

Voltage Drops 24

Multiple Load Connections 24

Remote Sense Connections 25

Sense Leads 25

Stability 26

OVP Considerations 26

Fast/Normal Operation 27

Inductive Loading 27

Capacitive Loading 27

INH/FLT Connections 28

Controller Connections 30

GPIB Interface 30

RS-232 Interface 30

8

TURN-ON CHECKOUT 31

Introduction 31

Using the Keypad 31

Checkout Procedure 31

In Case of Trouble 34

Error Messages 34

Line Fuse 34

FRONT PANEL OPERATION 35

Introduction 35

Front Panel Description 35

System Keys 37

Function Keys 38

Immediate Action Keys 38

Scrolling Keys 38

Metering Keys 39

Output Control Keys 40

Entry Keys 41

Examples of Front Panel Programming 42

1 - Setting the Output Voltage and Current 42

2 - Querying and Clearing Output Protection 43

3 - Making Front Panel Measurements 43

4 - Programming the Digital Output Port 45

5 - Programming the Output Relay (option 760 only) 46

6 - Setting the GPIB Address and RS-232 Parameters 46

7 - Saving and Recalling Operating States 47

SPECIFICATIONS 49

Specifications 49

Supplemental Characteristics 49

VERIFICATION AND CALIBRATION 53

Introduction 53

Equipment Required 53

Test Setup 53

Performing the Verification Tests 54

Turn-On Checkout 54

Voltage Programming and Measurement Accuracy 55

Current Programming and Measurement Accuracy 55

Performing the Calibration Procedure 59

Front Panel Calibration Menu 59

Front Panel Calibration 59

Calibration Error Messages 62

Changing the Calibration Password 62

Calibration Over the GPIB 63

ERROR MESSAGES 65

LINE VOLTAGE CONVERSION 69

Open the Unit 69

Configure the Power Transformer 69

Install the Correct Line Fuse 69

Close the Unit 70

INDEX 71

9

1

Quick Reference

Agilent 66332A Dynamic Measurement DC Source and

Agilent 6631B/6632B/6633B/6634B System DC Power

Supplies

The Agilent 66332A is a 100 Watt, high performance dc power supply that provides dynamic

measurement and analysis of voltage and current waveforms. It is designed to simplify the testing of

digital cellular and mobile phones. For example, data acquired using its dynamic measurement capability

can be used in determining the battery operating time of digital wireless communications products.

The Agilent 6631B/6632B/6633B/6634B are 100 Watt, high performance dc power supplies with output

current measurement capability in the microampere range. They are well suited for testing portable

battery-powered products.

Additionally, the combination of bench-top and system features in these dc sources provide versatile

solutions for your design and test requirements.

Convenient bench-top features

♦Up to 100 Watts output power

♦Easy to use knob for voltage and current settings

♦Highly visible vacuum-fluorescent front panel display

♦Excellent load and line regulation; low ripple and noise

♦Measurement capability down to microampere levels

♦Current sinking up to the maximum rated output current

♦Instrument state storage

♦Portable case

Flexible system features

♦GPIB (IEEE-488) and RS-232 interfaces are standard

♦SCPI (Standard Commands for Programmable Instruments) compatibility

♦Triggered acquisition of digitized output current and voltage waveforms (Agilent 66332A only)

♦I/O setup easily done from the front panel

1 – Quick Reference

10

The Front Panel - At a Glance

j14-character display

shows output

measurements and

programmed values.

kAnnunciators

indicate operating

modes and status

conditions.

lRotary control

sets voltage, current,

and menu parameters.

Use and

to set the resolution;

then adjust the value

with the knob.

mOptional front

panel output

connectors.

66XXA Dynamic Measurement DC Source

0-20V / 02A

CV CC Unr Dis OCP Prot Cal Shift Rmt Addr Err SRQ

240 VDC

Max

+_

+

-

LINE

On

Off

SYSTEM FUNCTION ENTRY OUTPUT

Local

Error

Address

Save

Recall

Shift

Input

Meter

OV

Voltage

OCP

Current

Cal

Output

Prot Clear

Protect

Output

on/off

7

4

1

0

8

5

2

.

9

6

3

-

Clear

Entry

Back

space

Enter

1 2 3

56 7 8

4

nTurns the dc source

on and off.

o System keys:

♦return to Local

mode

♦set the GPIB

address

♦set the RS-232

interface

♦display SCPI

error codes

♦save and recall

instrument states.

p Function keys:

♦enable/disable

output

♦select metering

functions

♦program voltage

and current

♦set and clear

protection

functions

♦ and

scroll through the

front panel menu

commands.

qEntry keys:

♦enter values

♦increment or

decrement values

♦ and

select front panel

menu parameters.

♦ and

select a digit in

the numeric entry

field.

Quick Reference – 1

11

Front Panel Number Entry

Enter numbers from the front panel using one of the following methods:

Use the arrow keys and knob to change voltage or current settings

NOTE The output must be ON to see the displayed values change in Meter mode.

Use the Function keys and knob to change the displayed settings

Use the Arrow keys to edit individual digits in the displayed setting

Increments the flashing digit

Decrements the flashing digit

Moves the flashing digit to the right

Moves the flashing digit to the left

Enters the value when editing is complete

Use the Function keys and Entry keys to enter a new value

NOTE If you make a mistake, use the Backspace key to delete the number, or press the Meter

key to return to meter mode.

1 – Quick Reference

12

Front Panel Annunciators

CV The output is operating in constant voltage mode.

CC The output is operating in constant current mode.

Unr The output is unregulated.

Dis The output is OFF. Press the Output On/Off key to turn the

output on.

OCP The over-current protection state is ON. Press the OCP key to

turn over-current protection off.

Prot Indicates that the output has been disabled by one of the

protection features. Press the Prot Clear key to clear the

protection condition.

Cal Calibration mode is ON. Scroll to the Cal Off command and

press the Enter key to exit the calibration mode.

Shift The Shift key has been pressed.

Rmt The selected Remote programming interface (either GPIB or

RS-232) is active. Press the Local key to return the unit to

front panel control.

Addr The interface is addressed to talk or listen.

Err There is an error in the SCPI error queue. Press the Error key

to view the error code.

SRQ The interface is requesting service.

Immediate Action Keys

A toggle switch that turns the output of the dc source on

or off.

Activates front panel control when the unit is in remote

mode (unless a Lockout command is in effect).

Resets the protection circuit and allows the unit to

return to its last programmed state.

A toggle switch that enables or disables overcurrent

protection.

Output

On/Off

Local

Prot ClrShift

OCPShift

Quick Reference – 1

13

Front Panel Menus - At a Glance

ADDRESS 7 Sets the GPIB Address

INTF GPIB Selects an interface (GPIB or RS232)

BAUDRATE 300 Selects baud rate (300, 600, 1200, 2400, 4800, 9600)

PARITY NONE Selects message parity (NONE, EVEN, ODD, MARK, SPACE)

FLOW NONE Selects flow control (XON-XOFF, RTS-CTS, DTR-DSR, NONE)

LANG SCPI Selects language (SCPI or COMP)

*RCL 0 Recalls instrument state

*SAV 0 Saves present instrument state

ERROR 0 Displays errors in SCPI error queue

12.000V 0.204A Measures output voltage and current

12.500V MAX Measures peak output voltage1

1.000V MIN Measures minimum output voltage1

12.330V HIGH Measures the high level of a voltage pulse waveform1

0.080V LOW Measures the low level of a voltage pulse waveform1

12.000V RMS Measures rms voltage1

0.350A MAX Measures peak output current1

0.050A MIN Measures minimum output current1

0.400A HIGH Measures the high level of a current pulse waveform1

0.012A LOW Measures the low level of a current pulse waveform1

0.210A RMS Measures rms current1

VOLT 20.000 Sets the output voltage

CURR 2.000 Sets the output current

OC -- -- -- -- Protection status (example shows overcurrent tripped)

*RST Places the dc source in the factory-default state

PON:STATE RST Select the power-on state command (RST or RCL0)

PROT:DLY 0.08 Sets the output protection delay in seconds

RI LATCHING Sets the remote inhibit mode (LATCHING, LIVE, or OFF)

DFI OFF Sets the discrete fault indicator state (ON or OFF)

DFI:SOUR OFF Selects the DFI source (QUES, OPER, ESB, RQS, or OFF)

PORT RIDFI Sets the output port functions (RIDFI or DIGIO)

DIGIO 7 Sets and reads the I/O port value (0 through 7)

RELAY ON Sets the output relay state (ON or OFF) 2

RELAY NORM Sets the output relay polarity (NORM or REV) 2

VOLT:PROT 22 Sets overvoltage protection level

CURR:RANG HIGH Sets current range (HIGH, LOW, or AUTO)

CURR:DET ACDC Sets current measurement detector (ACDC or DC)1

CAL ON Accesses calibration menu (See User’s Guide).

Use and to select menu parameters. Use to exit any menu and return to metering mode.

1Not available on Agilent 6631B - 6634B or in Compatibility mode. 2Not available on Agilent 6631B.

Address

Recall

SaveShift

ErrorShift

Meter

Voltage

Current

Protect

Output

OV

Shift

Shift Input

Cal

Shift

Meter

1 – Quick Reference

14

SCPI Programming Commands - At a Glance

NOTE Some [optional] commands have been omitted for clarity. Refer to the Programming

Guide for a complete description of all programming commands.

ABORt SENSe

CALibrate :CURRent :RANGe <n>

:CURRent [:SOURce] [:POSitive] :DETector ACDC | DC1

:NEGative :FUNCtion “VOLT” | “CURR”1

:MEASure :LOWRange :SWEep :OFFSet :POINts <n>1

:AC1 :POINts <n>

:DATA <n> :TINTerval <n>

:LEVel P1 | P2 | P3 | P4 :WINDow HANN | RECT

:PASSword <n> [SOURce:]

:SAVE CURRent [:LEVel] [:IMMediate] <n>

:STATe <bool> [, <n>] :TRIGgered <n>

:VOLTage [:DC] :PROTection :STATe <bool>

:PROTection DIGital :DATA <n>

DISPlay :FUNCtion RIDF | DIG

[:STATe] <bool> VOLTage [:LEVel] [:IMMediate] <n>

:MODE NORMal | TEXT :TRIGgered <n>

:TEXT <display_string> :ALC :BANDwidth? | :BWIDth?

INITiate :PROTection <n>

[:IMMediate] :SEQuence[1|21] STATus

:NAME TRANsient | ACQuire1 :PRESet

:CONTinuous :SEQuence[1], <bool> :OPERation [:EVENt]?

:NAME TRANsient, <bool> :CONDition?

MEASure | FETCh2 :ENABle <n>

:ARRay :CURRent?1 :NTRansition <n>

:VOLTage?1 :PTRansition <n>

[:SCALar]:CURRent[:DC]? :QUEStionable [:EVENt]?

:ACDC?1 :CONDition?

:HIGH?

1 :ENABle <n>

:LOW?

1 :NTRansition <n>

:MAX?

1 :PTRansition <n>

:MIN?

1 SYSTem

:VOLTage [:DC]? :ERRor?

:ACDC?1 :LANGuage SCPI | COMPatibility

:HIGH?

1 :VERSion?

:LOW?

1 :LOCal

:MAX?

1 :REMote

:MIN?

1 :RWLock

OUTPut TRIGger

[:STATe] <bool> [,NORelay] :SEQuence2 | :ACQuire [:IMMediate]1

:DFI [:STATe] <bool> :COUN t :CURRent <n>1

:SOURce QUES | OPER | ESB | RQS | OFF :VOLTage <n>1

:PON :STATe RST | RCL0 :HYSTeresis:CURRent <n>1

:PROTection :CLEar :VOLTage <n>1

:DELay <n> :LEVel :CURRent <n>1

:RELay [:STATe] <bool>3 :VOLTage <n>1

:POLarity NORM | REV3 :SLOPe :CURRent POS | NEG | EITH1

:RI :MODE LATCHing | LIVE | OFF :VOLTage POS | NEG | EITH1

:SOURce BUS | INTernal1

[:SEQuence1 | :TRANsient] [:IMMediate]

1Not available on Agilent 6631B - 6634B :SOURce BUS

2 Fetch commands not available on Agilent 6631B – 6634B :SEQuence1 :DEFine TRANsient

3 Not available on Agilent 6631B :SEQuence2 :DEFine ACQuire1

Quick Reference – 1

15

The Rear Panel - At a Glance

jGPIB (IEEE-488)

interface connector

kRS-232 interface

connector

lINH/FLT (remote

INHibit / internal

FauLT) connector.

Connector plug is

removable.

mOutput and

Remote sense

terminal block.

32

1

5

6

7

4

nFast/Normal switch oFuse holder pPower cord

connector (IEC 320)

Use the front panel Address menu to

♦Select the GPIB or RS-232 interface (see chapter 4 in User’s Guide)

♦Select the GPIB bus address (see chapter 4 in User’s Guide)

♦Configure the RS-232 interface (see chapter 4 in User’s Guide)

17

2

General Information

Document Orientation

This manual describes the operation of the Agilent Model 66332A Dynamic Measurement DC Source

and the Agilent Model 6631B/6632B/6633B/6634B System DC Power Supply. Unless otherwise noted,

both units will be referred to by the description "dc source" throughout this manual. The following

documents are shipped with your dc source:

♦a User’s Guide (this document), contains installation, checkout, and front panel information

♦a Programming Guide, contains detailed GPIB programming information

♦an Agilent VXIplug&play instrument driver, for Windows 95 and Windows NT 4.0

The following Getting Started Map will help you find the information you need to complete the specific

task that you want to accomplish. Refer to the table of contents or index of each guide for a complete list

of the information contained within.

Getting Started Map

Task Where to find information

Installing the unit

Line voltage connections

Computer connections

Load connections

User’s Guide

Checking out the unit

Verifying proper operation

Using the front panel

Calibrating the unit

User’s Guide

Using the front panel

Front panel keys

Front panel examples

User’s Guide

Using the programming interface

GPIB interface

RS-232 interface

User’s Guide

Programming Guide

Programming the unit using SCPI (and Compatibility)

commands

SCPI commands

SCPI programming examples

Compatibility language

Programming Guide

Installing the VXIplug&play instrument driver

NOTE: The driver must be installed on your pc to access

the on-line information. Drivers are available on the web at

www.agilent.com/find/drivers.

Programming Guide

2 – General Information

18

Safety Considerations

This dc source is a Safety Class 1 instrument, which means it has a protective earth terminal. That

terminal must be connected to earth ground through a power source equipped with a ground receptacle.

Refer to the Safety Summary page at the beginning of this guide for general safety information. Before

installation or operation, check the dc source and review this guide for safety warnings and instructions.

Safety warnings for specific procedures are located at appropriate places in the guide.

Options and Accessories

Table 2-1. Options

Option Description

100 100 Vac nominal, 50/60 Hz

120 120 Vac nominal, 50/60 Hz

220 220 Vac nominal, 50/60 Hz

230 230 Vac nominal, 50/60 Hz

020 Front panel output binding posts

760 Isolation and polarity reversal relays (not available on Agilent 6631B)

1CM Rack mount kit (p/n 5062-3974)

1CP Rack mount kit with handles (p/n 5062-3975)

Accessory Rack slide kit (p/n 1494-0060)

0BN Service manual with extra operating manuals

1Support rails are required when rack mounting units. Use E3663A support rails for Agilent rack cabinets, and

E3664A for non-Agilent rack cabinets.

Table 2-2. Accessories

Item Part Number

GPIB cables

1.0 meter (3.3 ft) 10833A

2.0 meters (6.6 ft) 10833B

4.0 meters (13.2 ft) 10833C

0.5 meters (1.6 ft) 10833D

RS-232 cable 34398A

(9-pin F to 9-pin F, 2.5 meter, null modem/printer cable with

one 9-pin M to 25-pin F adapter

RS-232 adapter kit (contains 4 adapters) 34399A

9-pin M to 25-pin M for pc or printer

9-pin M to 25-pin M for modem

9-pin M to 9-pin M for modem

General Information – 2

19

Description

Both the Agilent 66332A Dynamic Measurement DC Source and the Agilent

6631B/6632B/6633B/6634B System DC Power Supply combine two instruments in one unit. It includes

a dc source, which produces dc output with programmable voltage and current amplitude, and a highly

accurate voltage and current meter, with the capability to measure very low-level currents. Additionally,

the Agilent 66332A Dynamic Measurement DC Source has the ability to measure and characterize output

voltage and current of pulse or ac waveforms.

Capabilities

♦Output Voltage and Current control with 12-bit programming resolution

♦Extensive measurement capability:

dc voltage and current.

rms and peak voltage and current (Agilent 66332A only).

16-bit measurement resolution (low range accurate down to 2 microamperes).

Triggered acquisition of digitized current and voltage waveforms (Agilent 66332A only).

♦Front panel control with 14-character vacuum fluorescent display, keypad, and rotary control for

voltage and current settings.

♦Built-in GPIB and RS-232 interface programming with SCPI command language.

♦Non-volatile state storage and recall.

♦Over-voltage, over-current, over-temperature, and RI/DFI protection features.

♦Extensive selftest, status reporting, and software calibration.

Front Panel Controls

The front panel has both rotary (RPG) and keypad controls for setting the output voltage and current. The

panel display provides digital readouts of a number of output measurements. Annunciators display the

operating status of the dc source. System keys let you perform system functions such as setting the GPIB

address and recalling operating states. Front panel Function keys access the dc source function menus.

Front panel Entry keys let you select and enter parameter values. Refer to chapter 5 for a complete

description of the front panel controls.

Remote Programming

NOTE: When shipped, Agilent 6631B/6632B/6633B/6634B units are set to the Compatibility

programming language; Agilent 66332A units are set to the SCPI programming

language.

To change the programming language from Compatibility to SCPI, press the front panel

Address key, use ô to scroll to the LANG command, press to select SCPI, then

press Enter. Refer to the Programming Guide supplied with your dc source for further

information about remote programming.

The dc source may be remotely programmed via the GPIB bus and/or from an RS-232 serial port. GPIB

programming is with SCPI commands (Standard Commands for Programmable Instruments), which make

the dc source programs compatible with those of other GPIB instruments. Compatibility commands are

also included to make the dc source compatible with the Agilent 6632A, 6633A, and 6634A Series dc

2 – General Information

20

power supplies (refer to appendix D in the the Programming Guide). Dc source status registers allow

remote monitoring of a wide variety of dc source operating conditions.

Output Characteristic

The dc source’s output characteristic is shown in the following figure. The output of the dc source may be

adjusted to any value within the boundaries shown.

Output

Voltage

Output

Current

Imax

Vmax

ISET-ISET

VSET

CC operating line

CV operating line

0

1

2

+

-

-Imax

Figure 2-1. Dc Source Output Characteristic

The dc source can operate in either constant voltage (CV) or constant current (CC) over the rated output

voltage and current. Although the dc source can operate in either mode, it is designed as a constant

voltage source. This means that the unit turns on in constant voltage mode with the output voltage rising

to its Vset value. There is no command for constant current operation. The only way to turn the unit on in

constant current mode is by placing a short across the output and then enabling or turning the output on.

Note that the dc source cannot be programmed to operate in a specific mode. After initial turn-on, the

operating mode of the unit will be determined by the voltage setting, the current setting, and the load

resistance. In figure 2-1, operating point 1 is defined by the load line traversing the positive operating

quadrant in the constant voltage region. Operating point 2 is defined by the load line traversing the

positive operating quadrant in the constant current region.

Figure 2-1 also shows a single range − two quadrant capability. This means that the dc source is capable

of sourcing as well as sinking current over the output voltage range from zero volts to the rated

maximum. The negative quadrant is identical to the positive quadrant. However, the negative current

cannot be set independently; it tracks the value programmed for the positive current. Thus, if the positive

current is set to 1 A, the negative current is also set to 1 A.

NOTE: If you attempt to operate the dc source beyond its output ratings, the output of the unit

will become unregulated. This is indicated by the UNR annunciator on the front panel.

The output may also become unregulated if the ac input voltage drops below the

minimum rating specified in Appendix A.

Appendix A documents the dc source’s specifications and supplemental characteristics.

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